Dry-shaving device



L. WIMBERGER I Nov. 21', 1939.

DRY- S HAVING DEVI CE Filed Dec. 31,1937 7 Fig.4

o w o H w PatentedNovrZl, 1939 UNITED STATES 2,181,038 nnr-smvmo nnvl'osLeopold Wimberger, Vienna,

Austria, assignor to L. Wimberger Kommanditgesellschaft & 00.,tfiiititent-Verwertungsgesellsclntft, Vienna, Aus- Application December31, 1937, Serial No. 182,871 In Austria December 10, 1937 1 '10 Claims.

The invention relates to apreferably electrically operated dry shaver,consisting of an outer shear-plate and an inner shear-member cooperatingwith the outer shear-plate, the outer 5 shear-plate having in its middlepart a plurality of .openings of about the same diameter in alldirections and, on both side parts, rows of crossslots and the innershear-member having a platelike surface pressed to the inner surface ofthe outer shear-plate and having also cross-slots, whereby openings ofthe above mentioned form may also be provided.

One object of the invention consists in that at least a part of thecross-slots at least 'of the outer shear-plate, moving on the skin, areunited with at least a part of the above mentioned, preferably circularopenings, the diameter of these openings being greater than the width ofthe cross-slots. The inner ends of the cross-slots are thus providedwith circular enlargements.

As a further object of the invention the inner shear-member is providedwith longitudinal bridges by which are connected the cross bridges vseparating the cross-slots. -By way of examplesseveral forms of theinvention are illustrated in the drawing. Figs. 1, 3.

5 and 6 are plan views, illustrating the surface of the outershear-plate; Fig. 2 is a plan view of the surface of the innershear-member; Figs. 4 80 and 7 are cross-sections of the upper partrespectively of a detail of the shear-head.

In all figures l designates the outer shearplate and 2 the innershear-member. Openings 4 of preferably circular form are provided in themiddle part of the outer shear-plate I; on both sides of this plate areprovided short cross-slots 3, operating as guiding members forthe hairsand as primary shearers. These cross-slots lextend directly to. the ofwhich is greater than the width 5 of the crossslots Each of saidcross-slots thus has acircular The effect of enlargement at the inner'end.

the cross-slots maybe improved by taperingthe free ends iii of the same(see Fig. 3). Hairs lying on the skin may be, with greater effect,introduced in the cross slots by a step-like portion l3 (Fig. 4 or'7). 1

As a result of the union of 'the cross slots 3 with at least a part. ofthe circular openings 4 60 the hairs entered through the slots 3 in theopenings4 may not escape; therefore an excellent shaving effect isobtained. Hairs not entered in the slots may be caught'bythe inneropenings 4 separated from the-slots -3 and provided more in "55. themiddle of the plate, preferably for the puropenings 4, the; diameter 1 apose of a secondary flnestshaving. Conforming to the fact, that theouter openings 4 are preferably displaced. with respect to one anothertwo unequal lengths of the cross-slots 3 are obtained. The innershear-member 2 moved to and fro in relation to'the outer shear-plate Ihas preferably slots of a width 8 of greater or the same largeness asthe width 6 of the bridges of the shearplate I, whereby, conforming tothe invention, the cross-slots 3' of the inner shear-member 2 beingdivided in the middle part by small bridges 9. The bridges 9 arestaggered, as shown by Fig. 2, and are so located that in one of the endpositions of the inner shear-member 2 they are situated between twoopenings 4 of the shear-plate I. The openings 4' of the innershear-member 2, if provided in the same, (see left half of Fig. 2) aresituated "preferably in line with the crossbridges separating thecross-slots 3'. During the shaving operation the openings 4 of the'outer shear-plate I cooperating with cross bridges or' openings oftheinner shear-member 2 produce a better result of shaving than by knowndevices, because the cooperating shear-Openings 4,-4 in the outer andinner shear-plates are reduced by the movement of the inner shear-platefrom the full circular form down to a point.

The cross section of the shearing headillustrated by Fig. 4 shows thesituation of the longitudinal bridges 9 and the step-like portion I3 forbetter introducing the hairs in the slots. Fig.

7-shows in modification another form of the steplike portion l3.

In Fig. 5 and Fig. 6 other cross-slots are illustrated. The slots ll ofFig. 5 are situated obliquely to the longitudinal edge of .theshear-plate I. They extend not radially to the circular openings buttangentially. The arrangement described may also be used for crossslotssucheas are shown in Figs. 1 and 3. The arrangem'ent. conforming to'Fig. 6 shows also obliquely situated slots l2 which are curved.

The invention may be reduced to many other forms not described.

-Havirlg-now described my invention, what I claim is:

suitable forms of the practice in I 1. A. dryshaving deyice of themechanicallyelectrically operated type, consisting of an outer part ofsaid cross sl0ts being united with at least a part of saidshear-openings which thus form circular enlargements at the innercross-slots.

2. A dry-shaving device of the mechanicallyelectrically operated type,consisting of an outer shear-plate and an inner shear-plate cooperatingwith the outer shear-plate, the outer shear-plate having in its middlepart several rows of shearends of the openings of generally circularform and having shear-openings of generally circular form and having onboth side parts short cross-slots, at least a part of said cross-slotsbeing united with at least a part of said shear-openings at their innerends whereby said shear-openings constitute circular enlargements at theinner ends of said cross-slots, the outer ends of said cross-slotshaving outwardly diverging portions constituting wedge-shapedenlargements.

4. A dry-shaving device of the mechanicallyelectrically operatedtype,consisting'of an outer shear-plate and an inner shear-plate cooperatingwith the outer shear-plate, the outer shear-plate having in its middlepart several rows of shearopenings of generally circular form and havingon both side parts short cross slots, at least a part of saidcross-slots being united with at least a part of said shear-openings,the diameter of said shear-openings being greater than the width of saidcross-slots, said cross-slots being arranged in oblique relation to thelongitudinal edges of the shear-plate.

5. A dry-shaving device of the mechanicallyelectrically operated type,consisting of an outer shear-plate and an inner shear-plate cooperatingwith the outer shear-plate, the outer shear-plate having in its middlepart several rows of shearopenings of generally circular form and, onboth side parts, rows of cross-slots, at least a part of thesecross-slots being united with at least a part of the above mentionedopenings, the diameter of these openings being greater than the width oithe cross-slots, the cross-slots being curved.

6. A dry-shaving device of the mechanicallyelectrically operated type,consisting of an outer shear-plate and an inner shear-plate cooperatingwith the outer shear-plate, the outer shearplate having in its middlepart several rows of shear openings of generally circular form and, onboth side parts, rows of cross-slots, at least a part of thesecross-slots being united with at least a part of the above mentionedopenings, the

shear-openings and having on both side parts short cross-slots, at leasta part of said crossslots being united with at least a part of saidcircular shear-openings, said inner shear-plate having cross-slotsdivided in their middle part by small bridges.

8. A dry-shaving device of the mechanicallyelectrically operated type,consisting of an outer shear-plate and an inner shear-plate pressed tothe inner surface of the outer shear-plate, the outer shear-plate havingin its middle part several rows of generally circular shear-openings andhaving on both side parts short cross-slots, at least a part of saidcross slots being united with at least a part of said circularshear-openings, the inner shear-plate having also cross-slots divided intheir middle part by small bridges, said bridges being displaced withrespect to one another.

9. A dry-shaving device of the mechanicallyelectrically operated type,consisting of an outer shear-plate and an inner shear-plate pressed tothe inner surface of the outer shear-plate, the outer shear-plate havingin its middle part several rows of circular shear-openings and havingonboth side parts short cross-slots, at least a part of said cross-slotsbeing united with at least a part of. said circular shear-openings, theinner shear-plate having cross slots divided in their middle part bysmall bridges, said bridges being displaced with respect to one another,shearopeningsof generally circular form being provided in theinner-shear plate at the inner ends of the cross-slots thereof.

10. A dry-shaving device of the mechanicallyelectrically operated type,consisting of an outer shear-plate and an inner shear-plate cooperatingwith the outer shear-plate, the outer shearplate having in its middlepart a plurality of openings of about the same diameter in alldirectionsand, on both side parts, rows of crossslots, at least a part of thesecross-slots being united with at least a part of the abovementionedopenings, the diameter of these openings being greater thanthewidth of the cross-slots, the inner shear-member having a plate-likesurface pressed to the inner surface of the outer shear-plate and havingalso cross-slots on both "side parts, which slots are separated bybridges,

the bridges being staggered, generally circular openings'being providedin the inner shear-plate at each side of the cross-slots thereof and inline with said bridges.

LEOPOLD WIMBERGER.

